Improvement in plows



, W. OGLE.

Plow.

Patented Apr. 6. 1843.

UNITED STATES PATENT OFFICE.

WM. OGLE, OF FREDERICK, MARYLAND.

IMPROVEMENT IN' PLOW'S.

Specification forming part of Letters Patent No. 3,034, dated April 6,1843.

To all whom it may concern:

Be it known that I, WILLIAM OGLE, of the city of Frederick, in thecounty of Frederick and State of Maryland, have invented a new anduseful Improvement in Plows, which is described as follows, referencebeing had to the annexed drawings of the same, making part of thisspecification.

Figure 1 is aview of the plow turned upside down; Fig. 2, a side view ofthe plow; Fig. 3, the landside of the cutter; Fig. 4, the moldboard,share, and point; Fig. 5, the mold-board side of the cutter.

Similar letters in the several figures lvfcl to corresponding parts.

The beam A, clevis B, handles 0, share D, and point E are made in theusual manner.

The improt'ement is in the mold-board F, cutter G and land-bar H, andfastenings I and K of the standard.

The cutter G is made concave on the cuttingedge and convex on the sidenext the mold board,and correspoudin g with thefront thereof, and shapedon the sides to correspond with the curvature of the mold-board and theface of'the landside, extending from the land-bar nearly to the underside of the beam, having a tenon, G projecting from the rear or convexside of the cutter, which entersa corresponding mortise, P, in the frontpart ot'the mold-board, in which it is secured by a wedge or key, Q,orother suitable fastening, inserted horizontally through the landside andthe aforesaid tenon. Several cutters of the aforesaid form andcon'struction are cast with each plow in order to change them as theywear. The face of the cutter next the land is made to extend beyond theface of the landside, for

4 the purpose of reducing the lrictiou which is two-eighths of an inch,more or less, as may be required, or until it is in the same verticalplane with the landside of the land-bar H. The projection referred to isindicated by the shading at G It is etfected in the casting of thecutter, which is made of sufficient size to produce therequiredprojection.

Flanges K are formed on the upper end of the standard, which fitsagainst the under side of the beam for the admission of two verticalscrew-bolts, l, which pass through said flanges and the beam, havingnuts on the upper ends of said bolts, screwed down firmly upon the upperside of the beam.

A shoulder, R, is cast on the inside of the land-bar, :gainstwhich therear side of the share D is placed or abuts, and which removes thestrain from the vertical bolt J, passing through the shale andmold-board, caused by the resistance in passing through the sward.

The curvature of the mold-board F is such as to turn the sward with theleast resistance, and it is made narrower across the middle, at F thanat the top or bottom, for the purpose of reducing the friction of themold-board in passing through thesward.

The landside M is made shorter anddeeper than in 0th 1' plows, and thelower end of the handle nextv the landside is bolted to the tail endofit in a position more elevated than is usual, so to be above thesurface of the ground.

What I vlaim as my invention, and whichI desire to secure by LettersPatent, is-

1. The manner of constructing and securing the cutter, as described.

2. Extending the landside face of the cutter beyond the face of thelandside to reduce friction, as described. I 4

WILLIAM OGLE.

Witnesses:

EDM ND MAHER, A. E. J'oHNsoN.

